WHL-016 Rev. 4.14.16
60
NO FLAME ON IGN F09
PUMP ON
The boiler tried to ignite four times during
one heat call and failed. This is a serious
safety issue as indicated by the illuminated
red light and the word LOCKOUT flashing on
the display. The boiler will not restart until a
technician determines and repairs the cause
of ignition failure and pushes
RESET
on the
display. During this lockout fault, the pump
will remain on.
1. Watch the igniter through the observation window.
2. If there is no spark, check the spark electrode for the
proper .156” (3.96 mm) gap. See below.
3. Remove any corrosion from the spark electrode and
flame rectifier probe.
4. If there is a spark but no flame, check the gas supply to
the boiler.
5. If there is a flame, check the flame sensor.
6. Check any flue blockage or condensate blocks.
FLAME LOSS F10
PUMP ON
The flame was lost 3 times while the boiler
was firing during 1 demand call. This is a
serious safety issue as indicated by the
illuminated red light and the word LOCKOUT
flashing on the display. The boiler will not
restart until a technician determines and
repairs the cause of flame loss and pushes
RESET
on the display. During this lockout
fault, the pump will be on.
1. Monitor gas pressure to the unit while in operation.
2. Assure the flame is stable when lit.
3. Check if the display readout changes from “GAS VALVE
ON” to “RUN” within a few seconds of boiler ignites.
4. Check the FLAME signal on the display. It should be
above 1.0 when the boiler is firing.
5. If the signal reads less than 1 microampere, clean the
flame rectifier and spark probe.
6. If the problem persists and the ‘FLAME” signal is still
less than 1.0, replace the flame probe and spark igniter
probe.
7. The flame signal should be steady after the boiler has
been firing for 1 minute and is normally at 5.0 to 9.0. If the
flame signal is not steady, disassemble the burner door
and check the burner and its sealing gaskets.
FALSE FLAME SIG F11
PUMP ON
There is flame when the control is not telling
the boiler to run. This is a serious safety issue
as indicated by the illuminated red light and
the word LOCKOUT flashing on the display.
The boiler will not restart until a technician
determines and repairs the cause and pushes
RESET
on the display. During this lockout
fault, the pump will be on.
1. Look into window. If there is flame, turn the gas off to
the unit at the service valve and replace the gas valve.
2. If the flame signal on the status menu is greater than
1.0 when the burner is not lit, replace the spark ignitor and
the flame rectification probe.
3. If the flame signal is not present after turning off the gas
supply, check the gas valve electrical connection.
4. Check for condensate backup. Repair condensate
system as necessary. If condensate has partially filled
the combustion chamber, the refractory wall may be
damaged and should be replaced.
5. Turn the gas on at the service valve after corrective
action is taken.
6. If the refractory wall falls against the rectifier probe, it
may conduct the signal to ground, giving a false reading.
Summary of Contents for WBC 399
Page 14: ...WHL 016 Rev 4 14 16 14 Figure 6 Boiler Dimensions NOTE All Dimensions Are Approximate 055 080 ...
Page 21: ...WHL 016 Rev 4 14 16 21 Figure 9 Piping Symbol Legend ...
Page 42: ...WHL 016 Rev 4 14 16 42 Figure 33 Internal Connection Diagram ...
Page 65: ...WHL 016 Rev 4 14 16 65 Figure 37 Combustion System Replacement Parts 55 110kBTU Models ...
Page 67: ...WHL 016 Rev 4 14 16 67 Figure 39 Combustion System Replacement Parts 155 399kBTU Models ...
